51014623409 has 2 divisors, whose sum is σ = 51014623410. Its totient is φ = 51014623408.

The previous prime is 51014623343. The next prime is 51014623447. The reversal of 51014623409 is 90432641015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26285488384 + 24729135025 = 162128^2 + 157255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51014623409 is a prime.

It is not a weakly prime, because it can be changed into another prime (51014623489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25507311704 + 25507311705.

It is an arithmetic number, because the mean of its divisors is an integer number (25507311705).

Almost surely, 2^51014623409 is an apocalyptic number.

It is an amenable number.

51014623409 is a deficient number, since it is larger than the sum of its proper divisors (1).

51014623409 is an equidigital number, since it uses as much as digits as its factorization.

51014623409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 51014623409 in words is "fifty-one billion, fourteen million, six hundred twenty-three thousand, four hundred nine".